Hi all.. Need some advice and direction.. got a "02 F150 5.4L w/ 75k on the odometer.. When cold, there is a very slight single knocking sound until the engine warms up.. then as it warms up, the noise goes away..

Oil pressure is where it always is and I'm running Royal Purple 5W-20 oil. Idles like new and has plenty of power.. no oil burning..

Not sure if I have a problem arising or not, but need some input from those in the know..

Thanks

Piper62j

 

Hi all..
Need input and advice.. Got a '02 F150 5.4L w/ 70k on the clock.. Never abused... Idles smooth and has plenty of power all the time.. does not burn oil or smoke in any way.. Auto trans 2WD standard cab, short bed..

When cold, I can hear a slight knock until the engine warms up. then no noise at all.. Oil pressure is where it has always been which seems normal...

Any suggestions??

Thanks

Piper62j

 

Hi
Need help, guidance & suggestion.. '02 F150 70k on the clock.. Standard cab, short bed automatic.. 5w-20 Royal Purple, doesn't smoke or burn a drop.. Runs very smooth and plenty of power..

Very slight knocking noise when cold.. dissappears when warm...

Any ideas out there? Am I looking at a potential problem or is it not engine related?

Thanks

Piper62j

 

If it's a ticking noise, it's probably the exhaust manifold - the bolts are known to break... That's the first thing that comes to mind being that it will quit when the truck warms up

 

are you using a fram oil filter???

 

You sure its not an exhaust manifold leak? Common. Try to pinpoint with a stethoscope where the knocking is coming from. What Oil filter are you using?

 

arnt the 5.4 knowen to piston slap? put some 10-30 or 10-20 what ever its say's..( change the 5 to 10in it) it will go away.. its no big deal.. Do you tow alot?

 

What kind of oil filter are you running on that? Hopefully not the orange can of death (FRAM)!

 

Found the RH exhaust manifold gasket leaking last spring and replaced it.. Using Motorcraft FL380 oil filter..

 

Install FL380 Motorcraft filter last oil change.

 

Wrong Filter. Your motor, 2002 5.4L = FL820 Motorcraft.

Hey, do you know in the exhaust forum?

 

User has two threads going fellas, same question. Here's the other -

https://www.f150online.com/forums/ex...ine-noise.html

piper62j - Please don't start multiple threads on this site with the same or like question.

Thanks.

BTW- Incorrect oil filter, - yours = FL820

 

User has identical thread going, here -

https://www.f150online.com/forums/v8...ml#post4385748

piper62j - Please don't start multiple threads on this site with the same or like question.

Thanks.

 

You're right.. I just checked it... FL820 sorry

 

Just changed oil withe 5/20 Royal Purple and Motorcraft FL820 filter.. had noise way before this oil change.. Do not tow anything..